Showing posts with label light. Show all posts
Showing posts with label light. Show all posts

Tuesday, 9 March 2010

A picture tells a thousand words

I'm finding a difficulty with photographing the prototypes. I'm not the world's best photographer by any means, and even after spending hours trying to get it right, I'm still getting mixed results, as you can see:





It's mainly getting enough light that you can see the crane rather than just a glow of light, but without it being blurry or grainy. I vaguely remember ISO and stuff like that from my photography course, which is helping a little, but I'm sure the pictures could be better. This is why I discounted photography as a Light Night proposal!

And just to prove my non-photographer credentials, here's my "studio" - my wardrobe. See the clothes horse/air dryer thing? That's what I rest the camera on to keep it steady.



So can anyone suggest hints and tips, that don't involve shelling out thousands on new cameras and such?

Wednesday, 24 February 2010

You light up my life

So the light up crane was a go-ahead, but I needed better lights now I knew what the cranes would be made of.

I thought that someone had probably already done something similar, though I’d already googled variations on “light up cranes” to make sure I wasn’t copying someone else’s work, so I spent a while googling “make your own fairy lights”, “make your own LED art installation” etc. Turns out, the information superhighway is deficit in light up stuff with clear and easy instructions on how to Do It Yourself.

I googled LEDs, thinking that I was pretty au fait with them already, and it would be a doddle to figure it out, which led me on to realise that despite doing electronics at school, being responsible for the lighting rig at college, and making my own light-up tiara for my wedding, I haven’t the faintest idea how electricity works. Now I’ve spent hours reading up on it, I know less than before.

Since when did I let that stop me?

First task was to find the easiest thing that lights up that I could make. Google yielded an LED throwie. Okay, that looks pretty simple, and I don’t even need the magnet that it’s attached to, so basically I’m looking at taping an LED to a battery, and that’s it. Easy.

Off I went to the local cheap shop to buy:
- one of everything with an LED in it (I wasn’t sure which would be easiest to dismantle)
- a shed load of extra coin batteries (no idea what the difference is in batteries bar size, and don’t really understand the whole voltage thing, but I’m guessing it’s not going to be high enough to cause me any permanent harm) and
- lots and lots of insulation tape. I pretty much live by the “if in doubt, stick tape on it” mantra.

Here’s (part of) my haul:



The LED tealights seemed to be the flimsiest, so I started by trying to take one apart. I actually did this before I even got home, so there’s no pictures, but it was really simple – prise off the bottom and the electric bit falls out, then you can wiggle the LED until the bit soldered to the rest of the mechanism (probably not the right word, but the switch and battery pack and stuff) snaps off. Et voila! You have an empty casing, a load of now useless electric mahgumbo and an LED bulb. They even came with batteries included, so I popped those out to experiment with.

The batteries were teeny-tiny, and there were three of them, which when I finally managed to juggle them into line and put the LED sticks (what do you call the bits that come off the bulb?) onto them made the LED light up! Hurrah, I am a bona fide electronic genius!

Next was to stick a load of tape around this to keep it all together, and then I quickly folded up a crane out of the paper I’d decided to use, and then proceeded to gut it to slide the LED contraption into the middle of it. Finally, I had my very first LED prototype (I decided that the Christmas light one was a test, not a prototype, okay?) of my light up cranes:



The picture isn’t very good, mainly because I’m not a very good photographer. Plus, using a flickering candle LED meant that much like the Christmas light I used when testing out papers, the light was dimmer than I’ll want it for the proper installation, flickery (great for simulating candles, rubbish for cranes) and yellow, whereas I’m planning on using superbright white LEDs. I used the night-vision setting on my camera to show the crane up a bit more:



So, it’s possible. There’s still a million things to sort out, like how do you wire up 1000 LEDs and put them inside the cranes, and string it all up before the LED starts to run out? But, it’s looking properly possible now, and I’m getting rather excited!

Crane vs. Crane

How could I get my cranes to glow? The answer was obvious. Ask John.

John works in my office, and is a PhD in physics-ey stuff. Not particularly in electronics, but he’s a pretty good person to go to if you want to ask about how anything works. Plus, he watches the Discovery Channel a lot, and that’s good enough for me.

We came up with a couple of ideas, which were much better than my rather over-excited “tie them all to fairy lights!” suggestion. Next up were discussions on the actual cranes – we had to know what we’d be lighting before we could decide on how to do it.

Last time I made 1000 cranes I’d used everything from scrapbooking card to takeaway menus. There were even pages from books and stickers in there. This time round, I wanted plain white (the installation is supposed to represent peace and hope, so all pure white reinforced that), and something that was easy to fold (folding card over and over is hard on the hands, and this time, I had a deadline). It also had to be fairly cheap and easy to obtain, and as the cranes would be strung up, weight had to be a factor.

I narrowed it down to two main options for the paper to make the cranes out of:

- Printer paper. The pros of this are that it’s cheap, plentiful, and easy to fold with. Cons are that it doesn’t come in squares, so I’d have to make larger cranes (I’d originally been planning cranes made from 6”x6” paper, which is the standard size of the origami paper I usually use) to square it off easily, or I’d be stuck fiddling with it for a while making sure I was cutting out a perfect square. It’s also fairly thick, so I wasn’t sure if the light would shine through it enough.

- Origami paper. Standard origami paper is pretty easy to come by around here. It’s lightweight, thin (so light shines through easily), and obviously by its very nature easy to fold. It also comes in a standard square, so I could fold straight out of the packet. However, it’s much more expensive than printer paper (around £1 for a 100 sheet pack) and it comes in lots of colours, so even if I fold it “inside out” (so the white on the back of the paper is on the outside, and the colour on the inside) the colour will still glow through if it is lit from inside, and there will be some colours in a pack I can’t use (brown and black, and possibly other darker colours, as they’d swallow up the light inside), which again would make it more expensive.

After lots of test runs of making cranes of different sizes and different colours, and shoving a handy Christmas light into it to assess light distribution, I decided that the printer paper was a better choice all round, as the larger cranes didn’t detract from the effect so I could square it off easily, and I preferred the all-white as it was a clearer connotation (can you have a clear connotation?) of the peace message I was trying to put across. The Christmas light didn’t shine through brilliantly, but it was a small yellow old-style bulb rather than the LEDs we’d been looking at, so I wasn’t too worried about it.

I’d just made my first prototype light-up crane!